Haye didn't finish Barrett, Valuev, Ruiz nor Harrison after he hurt them for the first time. Haye looked very sloppy when trying to finish Ruiz and Harrison. Wild and off-balance vs. Barrett. I'd be quite surprised if he managed to cleanly finish Wlad instantly after the first knockdown.
Wlad's recovery is not very good...Sure, he showed some heart to pick himself up against Peter, but Peter is no David Haye in the skills department....Haye will finish someone that has average to sub-par recovery ability like Wlad does....
I think it will be Haye who's going to be trying to survive early in this fight. Wladimir is a good finisher too.